The national mileage rate set by the IRS (for tax deductions) is $.34/mile. If a trucking company were to use this number and quoted per mile you'd be looking at close to $650. Which is close to what I'm paying for freight on my new Tracker out here in "zone 6".
You also have to put a price on your own time, gas, where and tear on your truck, time off from work, time away from the family. Remember, every vacation day spent driving home is one less vacation day spent catching fish. I would deffinately get 2 or 3 quotes from different companies and put a price on your own time. Then compare the difference and decide what is best for you.